Filling-machine.



H. M. SMITH. FILLING MACHINE.

APPLICATION FILED APB.. 15, 1907. 1,086,566, Patented Feb. 10, 1914.

"UNITED sTATEs PATENT oEEIoE.

HORACE M. SMITH, 0F CHICAGO, ILLINOIS, ASSIGNOR TO THE LIQUID CARBONIO COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F ILLINOIS.

FILLING-MACHINE.

Patented Feb.' 10, 1914.

To all whom ttm/ay concern:

Be itpknown that I, HORACE M. SMITH, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, havey invented new and useful Improvements in Filling-Machines, of which the followingl is a specification. V

A principal object of the invention is to provide a device of simple construction which can easily be operated to deposit a charge of syrup, salt solution or other liquid, in one or more bottles in measured quantities and to automatically recharge the filling mechanism after each operation of the machine, particular attention bein paid to the prevention of leakage of the lling liquid.

The bottle filling device embodying my invention incorporates in its construction, as

have a number of similar devices prior to my invention, a vertically sliding tube which, when in raised position, permits liquid to iow from the measuring tank into the bottle through the tube and which, when in lowered position, seals the measuring tank fromthe tube. Considerable difficulty has been experienced in devices of this character in preventing the waste of liquid between the sealing'tube and the aperture in the tank through which it moves. W'here stuliing boxes are used they must be made so tightas to require great force to move `the tube in filling the bottles. The contacting surfaces wear and the stuffing boxes must be continually tightened, rendering it hard to keep the machine in perfectv adjusted condition. It is one of the'aims of the present invention to provide automatically operable auxiliary means for preventing the leakage between the contacting relatively sliding surfaces, which means may be cheaply constructed and which will be so arranged with respect to the other parts of the device as to eiiciently operate regardless of wear of the parts within wide limits.

Additional objects and advantages of the invention will be apparent as it is better `understood from the following description which, taken in connection with the accompanying drawings, illustrates one preferred embodiment thereof.

On the drawings- Figure 1 is a vertical sectional -viewthrouglthe measuring and fillingmechanism em ying my invention; V

and Fig. 2 isa transverse sectional view on the l1ne 5-5 of Fig. 1.

Referring to the drawings, 9indicates the member 22, preferably a glass cylinder,`

which is secured against a seat 23 in the bottom 9 of the tank by a head 24 onits other end, this head being tightly clamped against the cylinder by bolts 25.r The interior ,22 of the glass cylinder constitutes a measuring chamber and is preferably made of a size suiicient 'to contain the largest charge of liquid that may be required. An air tube 26 extends through an opening 26 and a stuiiing box 29 in the bottom of the tank and projects upwardly in the tank above the level of the fluid therein. This tube is adapted to be adjusted to project downwardly in the measuring chamber to regulate the charge received by the measuring chamber for by cutting oil' the escape of air through this tube from the chamber the in-iow of liquid from the tank to the chamber is controlled. A filling tube 28 is vslidably arranged in the stuiing box 29 in the bottom of the tank and a stuffing box 30 at the' bottom of an extension 3l on the head 24. A collar 32 is secured on the filling tube within the chamber 22 and moveswith this tube as will be later described. YThis collar is of suiiicient diameter to extend over the bore 31 of the extension 31 and fits snugly about the tube, so that it forms a' diameter than 'the diameter of the filling tube, so that the lateral ports 36 start to ll as soon as they enter within the bore 31 when thebottle pressing iwardly against 5 the bell'lifts the tube intok ling position.

When it is desired to fill a bottle with my new and improved filling mechanism the bottle is positioned beneath the bell and pressed upwardly thereagainst, carrying the bell up until the filling tube 28 is lifted sufficiently to bring the port 36 in communication with the enlarged bore of the extension 31. As the tube moves -upwardly during this operation the collar 32 moves with it and communication is thus' established between the chamber 22 and the bottle. When the bottle has lbeen illed it is removed and the spring 33 immediately presses'the tube downwardly until the collar 32 rests upon the head 24 and closes the bore of the extension at which time the port 36 is disposed beneath the stuing box at the bottom of the extension.

The extension 31 greatly increases the accuracy of the filling operation and causes the bottles to effectively drain the tank as the lling operation is completed. The bore should be of appreciable length and of a diameter only suiiiciently greater than the external diameter of the filling tube to prevent capillary retardation of the flow of liquid. When it is constructed in this fashion the port in the filling tube remains in direct communication with the interior of the -measuring tank an appreciable period after it has passed the bottom of the tank. Diiiculty has been experienced in the use of these devices in the past in draining the bottom of the tank because of the comparatively rapid passing of the bottom by the port of the fill- 1ng tube. When the tank is nearly emptied the remaining liquid flows much slower into the tube than it does when the tank is full,` so that in the past frequently the tank has not been completely emptied because of too rapid lowering of the bottle'. It will be apparent that this difiicultyis overcome where this extension is provided. and constructed as described, as the port must remain in communication with the interior of the filling tank while it is passing through the bore of the extension. It will also be apparent that this construction prevents appreciable leakage should the stuiiing box or tube passing through it become worn in use as the collar 32 is pressed against the inner face-of the head 24:v by the spring and by the weight of the liquid in the tank. Wear of the parts will not at't'ect this collar as it slides over none of the surfaces of any of the parts, merely coming to rest as soon as it contacts with the head, so that itdoes not subject vitself to frictional engagement therewith which would wear it or destroy its eiciency should 'the other parts become loose.

the measuring chamber ateach operationoi 7d the machine and lfor the prevention of leakage. y

I claim: 1. In a lilling machine of the. characterdescribed, the combination of a measuring ,5

chamber having a hollow extension depending rom its bottom, a movable endwise filling tube of diameter less than the internal diameter of said extension, open at its bottom and disposed through said extension, said tube having an inlet port adjacent its end arranged to rest beneath said extension when'the lling tube is in normal position and to pass through said extension when said filling tube is-moved toraised position, a stuiling box at the end of said extension and embracing sa id tube and means for supplying liquid to said chamber.

` 2. In a filling machine of the character described, the combination of a measuring chamber having a hollow extension depending from its bottom, a movable endwise filling tube of diameter less than the internal diameter of said extension, open at its bottom and disposed through said extension, said tube having an inlet port adjacent its. end arranged to rest beneath said extension when the filling tube is in normal position and to pass through said extension when said lling tube is moved to raised position, 10o a stuffing box at the end of said extension and embracing said tube-,1 and means for automatically supplying a predetermined uantity of liquid to said chamber after each lin operation is completed. 105

3. n a filling machine of the character v described, the combination of a measuring chamber having a hollow extension depending from its bottom, a movable endwise lling tube of diameter less than the internal diameter of said extension, open at its bottom andv disposed through said extension, said tube having an inlet port adjacent its end arranged to rest beneath said extension when the filling tube is in normal position 11E and to pass through said extension when said filling tube Iis moved to raised position, a stuiiing box at the end of said ,extension and embracing 'said tube, a collar fixed to said. tube and 'positioned to seal said extension 120 from said chamber when the tube is in normal position, means for pressing said collar against the bottom of said chamber and means for supplying liquid to said chamber.

4. In a filling machine of the character A described, the combination of 4a measuring chamber having a hollow extension depending from its bot-tom, a movable endwise tilling tube of diameter less than the internal diameter of said extension, open at its bot- 13 1,ose,5oo a tom and disposed through said extension, saidy tube having an inlet 'port adjacent its end arranged to rest beneath said extension when the filling tube is in .normal position and to pass through said lextension when said filling tube is moved to raised position, a stuiling box at the end/Lof said extension and embracing said tube, a'eollar ixed on said tube and positioned to seal said exten- 10 sion from said chamber when the tube is in ber after each illing operation is completed. 15

HORACE M. SMITH.

Witnesses:

J. H. RANDALL, A. C.WooD. 

